User blog comment:DaD0geOv3rL0rd/What will the 8th gym be?/@comment-32358261-20170814084327

My friend made a theory to work out the PBB gym types. He said every 2 gyms share a weakness.

Electric and fire are weak to ground

Water and flying weak to electric

Ground and grass weak to ice

And there is the dark gym. So I believe it would be a type that shares a weakness with dark. So a type weak to maybe bug or fighting or fairy. So it could be,

Rock, steel, poison, ice, normal or psychic. Personally I think it would be a psychic type gym. I guess the gym leader will have mega Alakazam